Add support for 'Notes' to Office JS API for Excel

I'm migrating a VSTO Excel add-in to JS and noticed a features that's not available yet. In the VSTO model, we can create cell comments/notes that are intended as documentation, showing the user t...

AdrianWu

Microsoft

Feb 19, 2025

HI ChemMitch, tobydimmick

I’m excited to share some great news: the Note API is now supported in the latest Excel API set (v1.18), which applies to all Excel endpoints—including Web, Windows, and Mac.

Please check here for more details:
https://learn.microsoft.com/en-us/javascript/api/excel/excel.note?view=excel-js-preview

Regarding the unintended behavior of comments unnecessarily including user names, this is also the default behavior for notes. After any user input, Excel automatically adds the author's name to the top of the note. However, developers can manually edit the note again to remove it if necessary. We will continue to improve the Note API to enhance the developer experience, but we hope this update already helps unblock your add-in development.